A stopcocking valve [1] metung yang straight-through valve na mabilis a makabuklat ampo makasara, ampo keraklan gagamitan de para kareng media a ating makabitin a particles pauli ning pamagpunas a epektu ning kimut pilatan da reng screw seal surfaces ampo ing kumpletung proteksyun laban keng pamakipag-ugnayan keng flowing medium nung ganap yang makabuklat. Ing metung pang importanting bage yapin ing madali yang i-adapt kareng multi-channel constructions, para ing metung a valve malyari yang mika adwa, atlu, o apat a miyayaliwang flow channels. Iti papasimpli ne ing disenyu ning sistema ning pipa, babawasan na ing dagul da reng balbula a gagamitan, at babawasan na ing mapilan a koneksyun a kailangan kareng kasangkapan.
makananu ya gagana ing valves karengstopcockkatawan a ating through-holes bilang makabuklat ampo makasara a bage. Ing katawan ning plug mag rotate ya keng [2] stem para mika opening ampo closing action. Ing malati, e makabalut, plug valve kilala ya naman bilang "cocker". Ing plug body ning plug valve keraklan metung yang cone (atin ya namang cylindrical body), na makatuglung keng conical orifice surface ning valve body para maging sealing pair. Ing plug valve iya ing minunang uri ning valve a ginamit, a maki simpling istruktura, mabilis a pamagbukas ampo pamagsara, ampo mababa ing fluid resistance. Deng ordinaryung plug valves magdependi la keng direktang pamakipag-ugnayan ning metal a plug body ampo ing valve body para maka-seal, inya sa't e masanting ing seal, maragul ing opening ampo closing force, madali yang isulud, at keraklan magagamit yamu keng mababang pressure (e mas matas keng 1 megapascal) ampo malating diameter (kulang keng 100 mm) a okasyun.
Classify
Agpang keng structural form, malyari yang miyabe keng apat a uri: masipit a plug valve, self-sealing plug valve, plug valve ampo oil-injected plug valve. Agpang keng channel form, malyari yang miyabe keng atlung uri: straight-through plug valve, three-way stopcock valve ampo four-way plug valve. Atin mu namang tube plug valves.
Deng plug valves makaclassify la agpang keng pamangamit kayabe nala reng: soft seal plug valves, oil-lubricated hard seal plug valves, poppet plug valves, three-way ampo four-way plug valves.
bentahe
1. Ing plug valve magagamit ya para keng maralas a operasyun, ampo ing pamagbukas ampo pamagsara mabilis ya ampo magaan.
2. Ing fluid resistance ning plug valve malati ya.
3. Ing plug valve atin yang simpleng istruktura, medyu malati ya sukad, magaan ya at madali yang a-maintain.
4. Mayap a pamag-seal.
5. E ya limitadu keng direksyun ning pamag-install, at ing direksyun ning danum ning medium malyari yang maging arbitraryu.
6. Ala yang vibration, mababa ing ingay.
Soft-seal gate valves
Ing soft seal gate valve, industrial valve, soft seal gate valve opening and closing parts are rams, ing direksyun ning kimut ning ram perpendicular ya keng direksyun ning fluid, ing gate valve malyari ya mung ganap a makabuklat at makasara, e ya malyaring i-adjust at i-throttle. Ing ram atin yang adwang sealing surface, ing peka karaniwan a gagamitan a mode gate valve adwa yang sealing surface ing gagawang wedge, ing wedge angle miyayaliwa ya kareng valve parameters, ing nominal diameter DN50~DN1200, ing operating temperature: ≤200°C.
Prinsipyu ning produktu
Ing gate plate ning wedgegate valve malyari yang gawang metung a kabilugan, a ausan dang rigid gate; Malyari ya namang gawang ram na malyaring magproduce ditak a deformation para mas masanting ing kayang manufacturability ampo makabawi ya keng deviation ning sealing surface angle keng prosesu ning pamagprosesu, na awsan dang elastic ram.
malambut a tatakgate valvesmakadake la keng adwang uri: makabuklat a barasmalambut a seal gate valveat dark rod soft sealgate valve. Keraklan atin yang trapezoidal thread ing lifting rod, na magbayu keng rotary motion keng linear motion kapamilatan ning nut keng libutad ning ram ampo ing guide groove keng valve body, yapin ing operating torque keng operating thrust. Potang mibuklat ya ing balbula, nung ing katas ning ram lift katumbas ne ning 1:1 a besis ing diametru ning balbula, ing dagul ning likidu e ya ganap a makasabat, dapot e ya malyaring bantayan ing posisyun a ini kabang mag-operate ya. King aktwal a pamangamit, makamarka ya kapamilatan ning vertex ning stem, ngana wari, ing posisyun a e malyaring ibuklat, antimo ing kayang ganap a makabuklat a posisyun. Para abalu ing lock-up pauli ning pamagbayu ning temperatura, keraklan makabuklat ya keng apex position at kaybat mibalik ya 1/2-1 turn bilang posisyun ning ganap a makabuklat a balbula. Uli na niti, ing ganap a makabuklat a posisyun ning balbula makayagpang ya keng posisyun ning ram (ie ing stroke). Ing klasing balbula ayni dapat yang maka-install keng pahalang keng pipeline.
Pangkabilugan a kailangan
1. Ing specifications ampo reng kategorya ningmalambut a seal gate valvesdapat makatupad ya kareng requirements ning pipeline design documents.
2. Ing modelu ning soft seal gate valve dapat yang magpakit keng national standard number requirements agpang kaniti. nung metung yang enterprise standard, ing relevant description ning model dapat yang ipabalu.
3. Ing working pressure ningmalambut a seal gate valvekailangan ing working pressure ning ≥ pipeline, alang epektu keng presyu, ing working pressure na agyu nang dalan ning valve dapat mas maragul ya kesa keng actual a working pressure ning pipeline, at nanu mang gilid ning soft seal gate valve dapat makatagal yang 1.1 times ing working pressure value ning valve a alang leakage;
4. Ing standard ning pamaglalang ningmalambut a seal gate valvedapat yang ipabalu ing national standard number base kaniti, at nung iti metung yang enterprise standard, ing enterprise document dapat yang makadikit keng procurement contract.
Kadwa, ing malambut a seal gate valve material
1. Ing materyales ning katawan ning balbula dapat cast iron, cast steel, stainless steel, 316L, at ing grade ampo ing aktwal a physical ampo chemical test data ning cast iron dapat ipabalu.
2. Ing stem material dapat yang magsumikap para keng stainless steel stem (2CR13), ampo ing maragul a diameter valve dapat ya namang stainless steel inlaid stem.
3. Ing nut gawa ya keng cast aluminum brass o cast aluminum bronze, at ing katigasan ampo sikanan mas maragul ya kesa keng valve stem.
4. Ing katigasan ampo sikanan ning stem bushing material e ya dapat mas maragul kesa keng valve stem, ampo dapat alang electrochemical corrosion keng valve stem ampo valve body keng kundisyun ning pamaglub keng danum.
5. Ing materyales ning sealing surface
(1) Deng uri ning malambut a tatakgate valves miyayaliwa la, at miyayaliwa la reng paralan ning pamag-seal ampo reng kailangan a materyales;
(2) Para kareng ordinaryung wedge gate valves, ing materyales, paralan ning pamag-ayos ampo ing paralan ning pamaggiling ning copper ring dapat yang ipaliwanag;
(3) Physicochemical ampo hygienic testing data ning soft seal gate valve ampo valve plate lining material;
6. Valve shaft packing
(1) Uling ing malambut a tatakgate valvekeng pipe network keraklan e maralas ing pamagbukas ampo pamagsara, ing packing kailangan yang maging inactive kilub ning mapilan a banua, ampo ing packing ali ya matwa, ampo ing sealing effect manatili ya keng makabang panaun;
(2) Ing valve packing dapat permanenti ya nung maralas yang makabuklat ampo makasara;
(3) Uling kareng requirements, ing valve shaft packing pagsikapan na ing e ya palitan keng bie o maigit apulung banua;
(4) nung kailangan yang palitan ing packing, ing disenyu ning pneumatic valve dapat yang ikonsidera ing paralan na malyaring palitan keng kondisyun ning pressure ning danum.
Katlu, ing operating mechanism ning soft sealgate valve
3.1 Ing direksyun ning pamagbukas ampo pamagsara ning soft seal gate valve kabang mag-operate dapat makasara ya clockwise.
3.2 Uling ing pneumatic valve keng pipe network maralas yang manual a bubuklat ampo isara, ing bilang da reng pamagbukas ampo pamagsara dapat e masyadung dakal, ngana wari, ing maragul a diameter valve dapat atyu ya kilub ning 200-600 revolutions.
3.3 Para mas madali ing pamagbukas ampo pamagsara ning metung a tau, ing maximum a pamagbukas ampo pamagsara dapat 240N-m ya keng kundisyun ning pressure ning pipeline.
3.4 Ing pamagbukas ampo pamagsara ning operation end ning soft seal gate valve dapat square tenon ya, ampo ing sukad dapat standardized ya, at makayarap ya keng gabun, para deng tau malyari lang mag operate diretsu ibat keng gabun. Deng balbula a maki disc discs e la masanting gamitan kareng underground networks.
3.5 display panel ning opening ampo closing degree ning soft sealgate valve
(1) Ing scale mark ning opening ampo closing degree ning soft seal gate valve dapat yang i-cast keng gearbox cover o keng shell ning display disc kaybat nang mibayu direksyun, makayarap ngan keng gabun, ampo ing scale mark dapat yang brush kareng phosphors para akit na ing eye-catching;
(2) Ing materyales ning indicator disc needle malyari yang gawang stainless steel plate keng kundisyun ning masanting a pamaniakup, nung ali, metung yang painted steel plate, at e dapat gawa keng balat a aluminum;
(3) Ing indicator disc needle maka-akit ya, maka-fix yang matatag, nung ing pamag-adjust king pamagbukas at pamagsara ustu ya, dapat yang i-lock kareng rivets.
3.6 nung ing soft seal gate valve makakutkut yang malalam, at ing distansya pilatan ning operating mechanism ampo ing display panel ampo ing gabun ≥1.5m ya, dapat atin yang extension rod facility, at dapat yang maka-fix a matatag para akit da reng tau at mag-operate la ibat keng gabun. Buri ng sabyan, ing pamagbukas ampo pamagsara ning balbula keng pipe network ali ya masanting para keng underground operation.
Kapat, ing pamagsubuk king pamagganap ning malambut a tatakgate valve
4.1 Potang ing balbula megawa ya keng batch ning metung a specification, ing metung a authoritative organisasyun dapat yang ipagkalub para subukan ing makatuking performance:
(1) Ing pamagbukas ampo pamagsara ning balbula lalam ning kundisyun ning obrang presyur;
(2) keng lalam ning kundisyun ning obra, malyari yang makasiguradung patuloy ing pamagbukas ampo pamagsara ningbalbulaisara yang masipit;
(3) Pamanalbe king flow resistance coefficient ning balbula lalam ning kundisyun ning pamagdala king danum king pipeline.
4.2 Ingbalbuladapat subukan ya anti kanini bayu ya mako keng pabrika:
(1) Potang mibuklat ya ing balbula, ing katawan ning balbula dapat yang makayabut keng internal pressure test a adwang besis keng working pressure value ning balbula;
(2) Potang makasara ya ing balbula, ding adwa nang gilid magdala lang 1.1 besis ing pressure ning balbula, at alang leakage, pero ing leakage value ning metal-sealed butterfly valve ali ya mas maragul kesa kareng requirements.
Kalima, ing kilub ampo kilwal a anti-corrosion ning soft seal gate valve
5.1 Kilub at kilwal ning katawan ning balbula (kayabe ne ing variable speed transmission box), mumuna, ing shot blasting, ing pamaglako king balas ampo ing pamaglako king kalawang dapat yang gawan, at ing powdered non-toxic epoxy resin dapat yang electrostatically sprayed, a maki kapal a maygit 0.3mm. Nung masakit ing mag-spray keng electrostatically non-toxic epoxy resin kareng sobrang mangaragul a balbula, ing parehung non-toxic epoxy paint dapat ya namang i-brush ampo i-spray.
5.2 Ing kilub ning katawan ning balbula ampo reng sablang bage ning balbula kailangan lang maging anti-corrosion, keng metung a banda, e ya kalawang nung mibabad ya keng danum, ampo ala yang electrochemical corrosion pilatan da reng adwang metal; Kadwa, makinis ya ing babo na, inya mabawas ing resistensya na keng danum.
5.3 Ing hygienic requirements ning epoxy resin o pintura para keng anti-corrosion keng valve body dapat atin yang test report ibat keng corresponding authority. Ing chemical ampo physical a katangian dapat makatupad ya kareng requirements.
Oras ning pamagpost: Nov-09-2024
